You're doing something truly important by taking action early — even when there are no symptoms. It shows how much you care. These habits can cause silent damage over time, and your concern today can protect your husband's health tomorrow. You're doing the right thing.
Here are few investigations, which you can able to refer
1. Blood pressure
2.
Complete blood count (CBC) - To detect anemia, infection etc. Smoking & alcohol may affect blood counts.
3.
Liver function tests (LFTs) — e.g. AST, ALT, ALP, GGT, bilirubin,
albumin To see liver cell damage; detect possible alcohol‑related liver injury.
4.
Kidney function tests — e.g. serum
creatinine, BUN/urea, eGFR To detect reduced kidney filtering function.
5.
Electrolytes — e.g. sodium, potassium If kidney or liver function compromised or if using alcohol.
6.
Lipid profile — total cholesterol,
LDL,
HDL,
triglycerides, VLDL etc. Smoking, alcohol both raise bad lipids and lower good ones. Useful for heart disease risk.
7.
Fasting blood sugar /
HbA1c To catch risk of
diabetes (which further complicates other risks).
8. Tests for pancreatic function (if needed) — e.g. amylase/lipase Habitual alcohol can inflame pancreas. If any symptoms.
9. Chest imaging / Lung function tests — e.g. chest X‑ray, spirometry To detect early lung damage like COPD; chest X‑ray if suspicion of lung disease.
10. Electrocardiogram (ECG) & possibly Echocardiogram
11. Ultrasound abdomen - To check liver size, fatty liver, gallbladder, possibly pancreas, kidneys.
12. Tests for nutritional status — e.g.
Vitamin B12, folate, iron studies